With more than 75,000 square feet (7,000 square meters) of space for merchandise, the Mazi Supermarket—Iraq's largest—draws customers from all over the country to the prospering Kurdish city of Duhok. Anchor store in a growing megamall, the Mazi adjoins an amusement park that includes a spin-and-tilt ride, video games, and air hockey. But beneath the fun lies a painful chapter in Kurdish history: The complex was built on the site of a former Iraqi military facility where Kurds were imprisoned and tortured during the dictatorship of Saddam Hussein.